GADOLINIUM CAS 7440-54-2

In medical applications, the complex of gadolinium-diethylenediamine pentaacetic acid (DTPA) can be used as a modulator of MRI (Magnetic Resonance Imaging Diagnostics) picture intensity, like the X-ray contrast agent barium. That is, the use of water around gadolinium is affected by the magnetic field moment of the gadolinium nucleus, showing that the nature of the water is different from that of the unaffected water, using a control screen, which is conducive to the diagnosis of the disease [2].
Industrial field: The industrial technology known as magnetic freezing, which has been well known, is to heat up when it is transformed into a magnet by the magnetic field, and remove the heat absorption properties when the magnetic field magnetic disappears for cooling. Small and efficient chillers can be manufactured.
In the magnetic bubble memory device, gadolinium-potassium-garnet is used as a media substance. Magnetic bubble memory is to add a magnetic field to the vertical direction of the substance, so that it becomes a cylindrical magnetic field, strengthen the magnetic field, and soon the phenomenon of this magnetic field disappears. The use of magnetic bubble memory device can store information, generally used for information collection.
Other uses of gadolinium are used in fiber optics and optical discs as Terbium and Dysprosium. Photomagnetic recording is the use of light to replace magnetic reading magnetized and unmagnetized places, with high density, can rewrite the characteristics of the record.
Nuclear energy field: In the atomic energy industry, the control rod and neutron absorber of light water reactors and fast neutron breeding reactors are used as the characteristics of the large neutron absorption cross-section of the isotopes of europium and gadolinium [3].
The use of gadolinium is a strong reaction to thermal neutrons in all elements, besides to the control of atomic reactors, invisible neutrons can also be absorbed with gadolinium and made to emit light, as a fluorescent agent for photosensitivizing on X-ray film. [4]
Specific uses
Its main uses are:
(1) Its water-soluble paramagnetic complex can improve the body’s nuclear magnetic resonance (NMR) imaging signal in medical treatment [5].
(2) Its sulfur oxide can be used as a matrix grid for oscilloscopes of special brightness and X-ray fluorescent screens.
(3) Gadolinium in gadolinium gallium garnet is ideal for single substrates for magnetic bubble memory memory.
(4) When there is no Camot cycle restriction, it can be used as a solid-state magnetic cooling medium.
(5) Used as a chain reaction level inhibitor to control nuclear power plants to ensure the safety of nuclear reactions.
(6) Used as an additive for samarium cobalt magnets to ensure that the performance does not change with temperature.